fix logger

logger/logger.go

@@ -70,7 +70,7 @@ func NewLogger(cfg *conf.LogConf) (*Logger, error) {
 	multiWriter := io.MultiWriter(consoleWriter, fileWriter)
 
 	logger := &Logger{
-		level:         vars.LogLevel(cfg.Level),
+		level:         cfg.Level,
 		fileWriter:    fileWriter,
 		consoleWriter: consoleWriter,
 		logDir:        cfg.Dir,